/*
====================================================================
SITE.CSS - HLAVNÍ STYLESHEET
====================================================================
Soubor obsahuje všechny CSS styly pro aplikaci
Téma: Tmavý design s žlutými akcenty RGB(251, 221, 0)
Autor: Vývojář
Datum vytvoření: 2025
Verze: 2.1 - Žluté téma s real-time hodinami a moderním AI Chat designem
====================================================================
*/

/* ================================================================
   GOOGLE MATERIAL SYMBOLS
   ================================================================ */

/* Základní nastavení pro Material Symbols ikony */
.material-symbols-outlined {
    font-family: 'Material Symbols Outlined';
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-feature-settings: 'liga';
    -webkit-font-smoothing: antialiased;
    vertical-align: middle;
}

/* Material ikony v navigaci */
.navbar-nav .material-symbols-outlined {
    font-size: 20px;
    vertical-align: middle;
}

/* Material ikony v kartách */
.card .material-symbols-outlined {
    font-size: 24px;
    vertical-align: middle;
}

/* Material ikony v nadpisech */
h1 .material-symbols-outlined,
h2 .material-symbols-outlined,
h3 .material-symbols-outlined,
h4 .material-symbols-outlined,
h5 .material-symbols-outlined,
h6 .material-symbols-outlined {
    vertical-align: middle;
}

/* ================================================================
   ZÁKLADNÍ TYPOGRAFIE A RESPONSIVE DESIGN
   ================================================================ */

/* Základní velikost fontu pro malé obrazovky */
html {
    font-size: 14px;
}

/* Zvětšení fontu pro tablety a větší obrazovky */
@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

/* ================================================================
   FOCUS STAVY A ACCESSIBILITY
   ================================================================ */

/* Žluté focus stavy pro lepší accessibility */
.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem rgb(251, 221, 0);
}

/* ================================================================
   ZÁKLADNÍ LAYOUT A POZADÍ
   ================================================================ */

/* Nastavení minimální výšky stránky */
html {
    position: relative;
    min-height: 100%;
}

/* Hlavní tmavé pozadí a světlý text */
body {
    background-color: #1e1e1e; /* Velmi tmavá šedá */
    color: #f0f0f0; /* Světle šedá pro text */
}

/* ================================================================
   NAVIGACE A FOOTER
   ================================================================ */

/* Tmavé pozadí pro navbar a footer */
.navbar, .footer {
    background-color: #2d2d2d !important; /* Tmavší šedá */
}

/* ================================================================
   ODKAZY - ŽLUTÉ TÉMA
   ================================================================ */

/* Základní žlutá barva pro všechny odkazy */
a {
    color: rgb(251, 221, 0); /* Hlavní žlutá barva */
}

    /* Světlejší žlutá při hover efektu */
    a:hover {
        color: rgb(255, 235, 50); /* Světlejší žlutá pro hover */
    }

/* ================================================================
   PŘEPSÁNÍ BOOTSTRAP BAREV PRO ŽLUTÉ TÉMA
   ================================================================ */

/* Bootstrap text-info třída -> žlutá */
.text-info {
    color: rgb(251, 221, 0) !important;
}

/* Bootstrap text-warning třída -> žlutá */
.text-warning {
    color: rgb(251, 221, 0) !important;
}

/* Bootstrap border-info třída -> žlutý okraj */
.border-info {
    border-color: rgb(251, 221, 0) !important;
}

/* Bootstrap bg-secondary třída -> tmavší pozadí */
.bg-secondary {
    background-color: #2d2d2d !important;
}

/* Bootstrap bg-dark třída -> nejtmavší pozadí */
.bg-dark {
    background-color: #1a1a1a !important;
}

/* ================================================================
   STYLY PRO REAL-TIME HODINY
   ================================================================ */

/* Styly pro jednotlivé části času (hodiny, minuty, sekundy...) */
.time-part {
    display: inline-block; /* Umožňuje transformace */
    font-family: 'Courier New', 'Monaco', monospace; /* Monospace font pro digitální vzhled */
    color: rgb(251, 221, 0); /* Žlutá barva */
    transition: all 0.15s ease; /* Plynulé animace */
    padding: 0; /* Vnitřní odsazení */
    margin: 6px 0 0 0;
}

    /* Hover efekt pro části času */
    .time-part:hover {
        background: rgba(251, 221, 0, 0.0); /* Intenzivnější pozadí */
        transform: scale(1.05); /* Mírné zvětšení */
    }

/* ================================================================
   LOGO A OBRÁZKY
   ================================================================ */

/* Hover efekt pro logo - zvětšení a glow efekt */
.img-fluid:hover {
    transform: scale(1.05); /* 5% zvětšení */
    transition: transform 0.3s ease; /* Plynulý přechod */
    filter: drop-shadow(0 0 10px rgba(251, 221, 0, 0.5)); /* Žlutý stín */
}

/* ================================================================
   KARTY A KONTEJNERY
   ================================================================ */

/* Styling pro Bootstrap karty */
.card {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4); /* Tmavý stín */
    border: 2px solid rgb(251, 221, 0) !important; /* Žlutý okraj */
    background-color: #1a1a1a !important; /* Tmavé pozadí */
}

/* Gradient pozadí pro obsah karet */
.card-body {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%) !important;
}

/* Hover efekt pro karty - žlutý glow */
.card:hover {
    box-shadow: 0 8px 25px rgba(251, 221, 0, 0.3); /* Žlutý glow efekt */
    transition: box-shadow 0.3s ease; /* Plynulý přechod */
}

/* ================================================================
   NADPISY A TEXT
   ================================================================ */

/* Všechny nadpisy budou žluté */
h1, h2, h3, h4, h5, h6 {
    color: rgb(251, 221, 0);
}

/* Tlumený text */
.text-muted {
    color: #888 !important;
}

/* ================================================================
   NAVIGAČNÍ LIŠTA - SPECIFICKÉ STYLY
   ================================================================ */

/* Brand název v navigaci */
.navbar-light .navbar-brand {
    color: rgb(251, 221, 0) !important; /* Žlutá barva */
    font-weight: bold; /* Tučné písmo */
}

    /* Hover efekt pro brand */
    .navbar-light .navbar-brand:hover {
        color: rgb(255, 235, 50) !important; /* Světlejší žlutá */
    }

/* Odkazy v navigaci */
.navbar-light .navbar-nav .nav-link {
    color: #f0f0f0 !important; /* Světle šedá */
}

    /* Hover efekt pro navigační odkazy */
    .navbar-light .navbar-nav .nav-link:hover {
        color: rgb(251, 221, 0) !important; /* Žlutá při hover */
    }

/* ================================================================
   LOGIN/REGISTER ODKAZY - BÍLÉ A TUČNÉ
   ================================================================ */

/* 
SILNÉ SELEKTORY PRO PŘEPSÁNÍ BOOTSTRAP .text-dark TŘÍDY
Vysoká specificita CSS selektorů pro Login/Register odkazy
*/

/* Přepsání Bootstrap .text-dark pro všechny navigační odkazy */
.navbar-nav .nav-link.text-dark,
.navbar-nav a.nav-link.text-dark,
.navbar-nav .nav-item .nav-link.text-dark,
.navbar-nav .nav-item a.nav-link.text-dark,
ul.navbar-nav li.nav-item a.nav-link.text-dark,
.navbar .navbar-nav .nav-item .nav-link.text-dark {
    color: white !important; /* Bílá barva textu */
    font-weight: bold !important; /* Tučné písmo */
    text-decoration: none !important; /* Bez podtržení */
}

    /* Hover efekty pro Login/Register odkazy s vysokou specificitou */
    .navbar-nav .nav-link.text-dark:hover,
    .navbar-nav a.nav-link.text-dark:hover,
    .navbar-nav .nav-item .nav-link.text-dark:hover,
    .navbar-nav .nav-item a.nav-link.text-dark:hover,
    ul.navbar-nav li.nav-item a.nav-link.text-dark:hover,
    .navbar .navbar-nav .nav-item .nav-link.text-dark:hover {
        color: rgb(251, 221, 0) !important; /* Žlutá při hover */
        font-weight: bold !important; /* Zachování tučného písma */
        text-shadow: 0 0 5px rgba(251, 221, 0, 0.5) !important; /* Jemný glow efekt */
    }

/* Specifický styl pro Logout button s vysokou specificitou */
.navbar-nav .nav-item button.nav-link.btn.btn-link.text-dark,
.navbar-nav button.nav-link.btn.btn-link.text-dark,
.navbar-nav .nav-item form button.nav-link.text-dark,
ul.navbar-nav li.nav-item form button.nav-link.text-dark {
    color: white !important;
    font-weight: bold !important;
    background: none !important;
    border: none !important;
    text-decoration: none !important;
}

    /* Hover efekt pro Logout button */
    .navbar-nav .nav-item button.nav-link.btn.btn-link.text-dark:hover,
    .navbar-nav button.nav-link.btn.btn-link.text-dark:hover,
    .navbar-nav .nav-item form button.nav-link.text-dark:hover,
    ul.navbar-nav li.nav-item form button.nav-link.text-dark:hover {
        color: rgb(251, 221, 0) !important;
        text-shadow: 0 0 5px rgba(251, 221, 0, 0.5) !important;
    }

/* Dodatečné selektory pro Identity Area odkazy */
a[asp-area="Identity"],
.navbar-nav a[asp-area="Identity"] {
    color: white !important;
    font-weight: bold !important;
}

    a[asp-area="Identity"]:hover,
    .navbar-nav a[asp-area="Identity"]:hover {
        color: rgb(251, 221, 0) !important;
        text-shadow: 0 0 5px rgba(251, 221, 0, 0.5) !important;
    }

/* ================================================================
   FOOTER STYLY
   ================================================================ */

/* Footer s žlutým horním okrajem */
.footer {
    border-top: 1px solid rgb(251, 221, 0) !important; /* Žlutý horní okraj */
    background-color: #2d2d2d !important; /* Tmavé pozadí */
}

    /* Žluté odkazy v footeru */
    .footer a {
        color: rgb(251, 221, 0) !important;
    }

/* ================================================================
   SPECIÁLNÍ EFEKTY A ANIMACE
   ================================================================ */

/* Kontejner pro časové efekty s gradientem */
.time-container {
    background: linear-gradient(45deg, rgba(251, 221, 0, 0.1), rgba(251, 221, 0, 0.05));
    border-radius: 10px;
    padding: 15px;
    position: relative;
    overflow: hidden;
}

    /* Před-element pro shine animaci */
    .time-container::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(251, 221, 0, 0.2), transparent);
        animation: shine 3s infinite; /* Nekonečná shine animace */
    }

/* Keyframes pro shine efekt */
@keyframes shine {
    0% {
        left: -100%; /* Start mimo obrazovku vlevo */
    }

    100% {
        left: 100%; /* Konec mimo obrazovku vpravo */
    }
}


/* Styly pro menu */
.thin-yellow-border {
    border: 1px dotted rgba(251, 221, 0, 0.5); /* Tenký žlutý okraj */
    border-radius: 5px; /* Zaoblené rohy */
    padding: 2px; /* Vnitřní odsazení */
    margin: 2px; /* Vnitřní odsazení */
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3); /* Jemný stín pro hloubku */
    transition: transform 0.2s ease, box-shadow 0.2s ease; /* Plynulé přechody */
}
    /* Hover efekt pro menu */
    .thin-yellow-border:hover {
        transform: translateY(-5px); /* Mírné zvednutí při hover */
        box-shadow: 0 2px 4px rgba(251, 221, 0, 0.3); /* Žlutý stín při hover */
    }
/* ================================================================
   STYLY PRO VELKOU TABULKU KOTLŮ
   ================================================================ */

/* Kontejner pro fullwidth tabulku - s 5px odsazením ze stran */
.container-fullwidth {
    margin: 0 !important; /* 5px odsazení ze stran */
    padding: 0 10px !important;
    width: calc(100vw - 15px) !important; /* 100% viewport width minus 10px (5px z každé strany) */
    max-width: none !important;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: calc(-50vw + 5px) !important; /* Upraveno pro 5px odsazení */
    margin-right: calc(-50vw + 5px) !important; /* Upraveno pro 5px odsazení */
}

/* Responsive tabulka s horizontálním scrollem */
.table-fullwidth {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch; /* Smooth scrolling na iOS */
}

/* Kompaktnější tabulka s menším fontem */
.table-compact {
    font-size: 0.8rem;
}

.table-compact th,
.table-compact td {
    padding: 0.25rem 0.4rem; /* Menší padding pro více místa */
    vertical-align: middle;
    border: 1px solid #444; /* Tenčí ohraničení */
}

/* Nowrap pro POPIS sloupce - zabránění zalamování */
.table-compact td.nowrap,
.table-compact th.nowrap {
    white-space: nowrap !important;
    overflow: hidden;
    text-overflow: ellipsis; /* Tři tečky při přetečení */
    max-width: 200px; /* Maximální šířka pro POPIS sloupce */
}

/* Hover efekt pro celý řádek */
.table-compact tbody tr:hover {
    background-color: rgba(251, 221, 0, 0.1) !important;
    transform: scale(1.01);
    transition: all 0.2s ease;
}

/* Číselné sloupce - zarovnání vpravo */
.table-compact td.number {
    text-align: right;
    font-family: 'Courier New', monospace;
}

/* Zkratky - centrované */
.table-compact td.center {
    text-align: center;
}

/* ================================================================
   STYLY PRO CSV DOWNLOAD TLAČÍTKO
   ================================================================ */

/* CSV download tlačítko */
.csv-download-btn {
    background-color: transparent !important;
    border: 2px solid rgb(251, 221, 0) !important;
    color: rgb(251, 221, 0) !important;
    font-weight: bold;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.csv-download-btn:hover {
    background-color: rgb(251, 221, 0) !important;
    color: #1a1a1a !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(251, 221, 0, 0.3);
}

.csv-download-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(251, 221, 0, 0.3);
}

/* ================================================================
   MODERNÍ AI CHAT - FRESH DESIGN
   ================================================================ */

/* Přidání podpory pro světlý/tmavý režim, zmenšení vertikálního prostoru a přidání proměnných pro velikost písma */
:root {
    --font-scale: 1;
    
    /* Dark Theme (default) */
    --bg-main: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0f0f0f 100%);
    --bg-header: linear-gradient(135deg, #1e1e1e 0%, #2d2d2d 100%);
    --bg-input: #1a1a1a;
    --bg-input-wrapper: #0a0a0a;
    --bg-bubble-ai: #1a1a1a;
    --bg-bubble-user: linear-gradient(135deg, #2a4a6a, #3b5f82);
    --text-primary: #e0e0e0;
    --text-secondary: #888;
    --text-title: linear-gradient(90deg, rgb(251, 221, 0), rgb(255, 235, 50));
    --border-color: #2a2a2a;
    --border-accent: rgba(251, 221, 0, 0.3);
    --shadow-color: rgba(0, 0, 0, 0.5);
    --scroll-thumb: rgba(251, 221, 0, 0.3);
}

[data-theme="light"] {
    --bg-main: linear-gradient(135deg, #f0f2f5 0%, #e9ecef 100%);
    --bg-header: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    --bg-input: #ffffff;
    --bg-input-wrapper: #f8f9fa;
    --bg-bubble-ai: #e9ecef;
    --bg-bubble-user: linear-gradient(135deg, #007bff, #0056b3);
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-title: linear-gradient(90deg, #0056b3, #007bff);
    --border-color: #dee2e6;
    --border-accent: rgba(0, 123, 255, 0.3);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --scroll-thumb: rgba(0, 123, 255, 0.5);
}

/* Main Container */
.ai-chat-modern {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    bottom: 60px;
    background: var(--bg-main);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    font-size: calc(1rem * var(--font-scale));
}

/* Modern Header with Gradient */
.chat-header-modern {
    background: var(--bg-header);
    border-bottom: 2px solid var(--border-accent);
    box-shadow: 0 4px 20px var(--shadow-color);
    position: relative;
    overflow: hidden;
}

.chat-header-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(251, 221, 0, 0.1), transparent);
    animation: shimmer 3s infinite;
}

.chat-header-modern {
    padding: 0.75rem 1rem;
}

.chat-header-modern::before {
    height: 150%;
}

[data-theme="light"] .chat-header-modern::before {
    background: linear-gradient(90deg, transparent, rgba(0, 123, 255, 0.1), transparent);
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.header-content {
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ai-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgb(251, 221, 0) 0%, rgb(255, 235, 50) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(251, 221, 0, 0.5);
}

[data-theme="light"] .ai-avatar {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.4);
}

.ai-avatar .material-symbols-outlined {
    font-size: 28px;
    color: #000;
}

[data-theme="light"] .ai-avatar .material-symbols-outlined {
    color: #fff;
}

.header-info {
    display: flex;
    flex-direction: column;
}

.chat-title-modern {
    font-size: calc(1.4rem * var(--font-scale));
    font-weight: 700;
    background: var(--text-title);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.chat-subtitle {
    color: var(--text-secondary);
    font-size: calc(0.85rem * var(--font-scale));
    margin: 0;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

.settings-group, .conversation-group {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-input);
    padding: 0.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.action-btn {
    background: transparent;
    border: 2px solid var(--border-accent);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.action-btn .material-symbols-outlined {
    font-size: calc(1.2rem * var(--font-scale));
}

.action-btn:hover {
    background: var(--border-accent);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.action-btn.danger {
    border-color: rgba(220, 53, 69, 0.3);
    color: #dc3545;
}

.action-btn.danger:hover {
    background: #dc3545;
    color: #fff;
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.4);
}

.btn-text {
    display: none;
    font-size: calc(0.8rem * var(--font-scale));
}

@media (min-width: 992px) {
    .btn-text {
        display: inline;
    }
}

/* Cost Banner */
.cost-banner-modern {
    background: rgba(0, 0, 0, 0.3);
    padding: 0.5rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

[data-theme="light"] .cost-banner-modern {
    background: rgba(0, 0, 0, 0.05);
}

.cost-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-size: calc(0.9rem * var(--font-scale));
}

.cost-item .material-symbols-outlined {
    color: rgb(251, 221, 0);
    font-size: calc(1.1rem * var(--font-scale));
}

[data-theme="light"] .cost-item .material-symbols-outlined {
    color: #007bff;
}

.cost-label {
    color: var(--text-secondary);
}

.cost-value {
    color: rgb(251, 221, 0);
    font-weight: 700;
    font-size: calc(1rem * var(--font-scale));
}

[data-theme="light"] .cost-value {
    color: #0056b3;
}

.cost-usd {
    color: #666;
    font-size: calc(0.8rem * var(--font-scale));
}

/* Messages Container */
.messages-modern {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(251, 221, 0, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(251, 221, 0, 0.03) 0%, transparent 50%);
}

[data-theme="light"] .messages-modern {
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(0, 123, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 123, 255, 0.03) 0%, transparent 50%);
}

.messages-modern::-webkit-scrollbar {
    width: 8px;
}

.messages-modern::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
}

.messages-modern::-webkit-scrollbar-thumb {
    background: var(--scroll-thumb);
    border-radius: 4px;
}

.messages-modern::-webkit-scrollbar-thumb:hover {
    background: rgba(251, 221, 0, 0.5);
}

[data-theme="light"] .messages-modern::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 123, 255, 0.7);
}

/* Welcome Screen */
.welcome-modern {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    padding: 2rem;
}

.welcome-animation .material-symbols-outlined {
    font-size: calc(5rem * var(--font-scale));
    background: var(--text-title);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-modern h2 {
    font-size: calc(1.8rem * var(--font-scale));
    margin-bottom: 1rem;
    background: var(--text-title);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-text {
    color: var(--text-secondary);
    font-size: calc(1rem * var(--font-scale));
    max-width: 600px;
    margin-bottom: 2rem;
}

.chip {
    background: rgba(251, 221, 0, 0.1);
    border: 1px solid var(--border-accent);
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgb(251, 221, 0);
    font-size: calc(0.9rem * var(--font-scale));
    transition: all 0.3s ease;
}

[data-theme="light"] .chip {
    background: rgba(0, 123, 255, 0.1);
    color: #007bff;
}

.chip:hover {
    background: rgba(251, 221, 0, 0.2);
    transform: translateY(-2px);
}

[data-theme="light"] .chip:hover {
    background: rgba(0, 123, 255, 0.2);
}

.chip .material-symbols-outlined {
    font-size: calc(1.2rem * var(--font-scale));
}

/* Modern Messages */
.message-modern {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    opacity: 0;
}

.message-avatar-modern {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 0.5rem;
}

.message-user .message-avatar-modern {
    background: linear-gradient(135deg, #3b5998, #4c70ba);
}

.message-ai .message-avatar-modern {
    background: linear-gradient(135deg, rgb(251, 221, 0), rgb(255, 235, 50));
}

[data-theme="light"] .message-ai .message-avatar-modern {
    background: linear-gradient(135deg, #007bff, #0056b3);
}

.message-avatar-modern .material-symbols-outlined {
    font-size: calc(1.5rem * var(--font-scale));
}

.message-user .message-avatar-modern .material-symbols-outlined {
    color: #fff;
}

.message-ai .message-avatar-modern .material-symbols-outlined {
    color: #000;
}

[data-theme="light"] .message-ai .message-avatar-modern .material-symbols-outlined {
    color: #fff;
}

.message-sender-modern {
    font-size: calc(0.8rem * var(--font-scale));
    font-weight: 600;
    margin-bottom: 0.3rem;
    color: var(--text-secondary);
}

.message-bubble-modern {
    background: var(--bg-bubble-ai);
    padding: 0.8rem 1.2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    line-height: 1.6;
    position: relative;
    overflow: hidden;
}

.message-user .message-bubble-modern {
    background: var(--bg-bubble-user);
    border-color: transparent;
    color: #fff;
}

.message-bubble-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
}

.message-user .message-bubble-modern::before {
    display: none;
}

/* Sources */
.sources-modern {
    margin-top: 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px solid var(--border-color);
}

.sources-title {
    color: rgb(251, 221, 0);
    font-size: calc(0.85rem * var(--font-scale));
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

[data-theme="light"] .sources-title {
    color: #0056b3;
}

.source-card {
    background: rgba(23, 162, 184, 0.1);
    border: 1px solid rgba(23, 162, 184, 0.3);
    padding: 0.6rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #17a2b8;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: calc(0.8rem * var(--font-scale));
}

.source-card:hover {
    background: rgba(23, 162, 184, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(23, 162, 184, 0.3);
}

.source-card .material-symbols-outlined {
    font-size: calc(1rem * var(--font-scale));
    flex-shrink: 0;
}

/* Message Meta */
.message-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 0.6rem;
    padding-top: 0.6rem;
    border-top: 1px solid var(--border-color);
    font-size: calc(0.75rem * var(--font-scale));
}

.meta-item .material-symbols-outlined {
    font-size: calc(1rem * var(--font-scale));
    color: rgb(251, 221, 0);
}

[data-theme="light"] .meta-item .material-symbols-outlined {
    color: #007bff;
}

.meta-item.search .material-symbols-outlined {
    color: #17a2b8;
}

/* Modern Input */
.input-modern {
    background: var(--bg-input);
    border-top: 2px solid var(--border-accent);
    padding: 1rem 1.5rem;
}

.input-wrapper-modern {
    background: var(--bg-input-wrapper);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 0.5rem;
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.input-wrapper-modern:focus-within {
    border-color: rgb(251, 221, 0);
    box-shadow: 0 0 0 3px rgba(251, 221, 0, 0.1);
}

[data-theme="light"] .input-wrapper-modern:focus-within {
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.input-wrapper-modern.drag-active {
    border-color: #17a2b8;
    background: rgba(23, 162, 184, 0.1);
    box-shadow: 0 0 0 3px rgba(23, 162, 184, 0.1);
}

.attach-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.attach-btn:hover {
    color: rgb(251, 221, 0);
    background: rgba(251, 221, 0, 0.1);
}

[data-theme="light"] .attach-btn:hover {
    color: #007bff;
    background: rgba(0, 123, 255, 0.1);
}

.attach-btn .material-symbols-outlined {
    font-size: calc(1.5rem * var(--font-scale));
}

.textarea-modern {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: calc(1rem * var(--font-scale));
    line-height: 1.5;
    resize: none;
    outline: none;
    min-height: 24px;
    max-height: 150px;
    font-family: inherit;
}

.textarea-modern::placeholder {
    color: var(--text-secondary);
}

.send-btn-modern {
    background: linear-gradient(135deg, rgb(251, 221, 0), rgb(255, 235, 50));
    border: none;
    color: #000;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

[data-theme="light"] .send-btn-modern {
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: #fff;
}

.send-btn-modern:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 15px rgba(251, 221, 0, 0.5);
}

[data-theme="light"] .send-btn-modern:hover {
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.4);
}

.send-btn-modern .material-symbols-outlined {
    font-size: calc(1.5rem * var(--font-scale));
}

.file-preview-modern {
    margin-top: 0.8rem;
    display: flex;
    gap: 0.75rem;
}

.file-chip {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    padding: 0.6rem 1rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-size: calc(0.9rem * var(--font-scale));
}

.file-chip .material-symbols-outlined {
    color: rgb(251, 221, 0);
    font-size: calc(1.5rem * var(--font-scale));
}

[data-theme="light"] .file-chip .material-symbols-outlined {
    color: #007bff;
}

.file-remove {
    background: transparent;
    border: none;
    color: #dc3545;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.file-remove:hover {
    background: rgba(220, 53, 69, 0.1);
}

.file-remove .material-symbols-outlined {
    font-size: calc(1.2rem * var(--font-scale));
}

.input-hint-modern {
    margin-top: 0.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: calc(0.75rem * var(--font-scale));
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.input-hint-modern .material-symbols-outlined {
    font-size: calc(1rem * var(--font-scale));
    color: rgb(251, 221, 0);
}

[data-theme="light"] .input-hint-modern .material-symbols-outlined {
    color: #007bff;
}

.input-hint-modern kbd {
    background: var(--bg-input);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: calc(0.85em * var(--font-scale));
    border: 1px solid var(--border-color);
}

/* Password Screen */
.password-screen {
    background: var(--bg-main);
}

.password-card {
    background: var(--bg-header);
    border: 2px solid var(--border-accent);
    border-radius: 20px;
    padding: 3rem 2.5rem;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: 0 10px 40px var(--shadow-color);
}

.password-icon .material-symbols-outlined {
    font-size: calc(4rem * var(--font-scale));
    color: rgb(251, 221, 0);
}

[data-theme="light"] .password-icon .material-symbols-outlined {
    color: #007bff;
}

.password-card h2 {
    color: rgb(251, 221, 0);
    margin-bottom: 0.5rem;
}

[data-theme="light"] .password-card h2 {
    color: #0056b3;
}

.password-input {
    background: var(--bg-input-wrapper);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem;
    font-size: calc(1.1rem * var(--font-scale));
    text-align: center;
    letter-spacing: 0.2em;
    transition: all 0.3s;
    border-radius: 12px;
}

.password-input:focus {
    background: var(--bg-input-wrapper);
    border-color: rgb(251, 221, 0);
    box-shadow: 0 0 0 3px rgba(251, 221, 0, 0.25);
    color: var(--text-primary);
}

[data-theme="light"] .password-input:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

.password-card .btn-warning {
    background: rgb(251, 221, 0);
    border: none;
    color: #000;
    font-weight: 600;
    padding: 0.75rem;
    font-size: calc(1.1rem * var(--font-scale));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

[data-theme="light"] .password-card .btn-warning {
    background: #007bff;
    color: #fff;
}

.password-card .btn-warning:hover {
    background: rgb(255, 235, 50);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(251, 221, 0, 0.4);
}

[data-theme="light"] .password-card .btn-warning:hover {
    background: #0056b3;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.4);
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .header-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .action-btn {
        flex: 1;
        justify-content: center;
    }
    
    .messages-modern {
        padding: 1rem;
    }
    
    .message-modern {
        margin-bottom: 1rem;
    }
    
    .sources-grid {
        grid-template-columns: 1fr;
    }
}