/* ==========================================================================
   Group 11 Theme - Modern Calendar UI
   Version: 4.1
   Updated: 2025-06-25
   Features:
   - Contemporary color scheme
   - Clean UI elements
   - Mobile-responsive design
   - Subtle animations
   - Minimal textures
   - Enhanced accessibility
   - Modern typography
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&family=Open+Sans:wght@300;600&display=swap');

:root {
    /* Group 11 Color Palette */
    --g11-bg: #F8FAFC;
    --g11-text: #4A5568;
    --g11-primary: #4C51BF;
    /* Indigo */
    --g11-secondary: #38B2AC;
    /* Teal */

    /* Gradient Colors */
    --g11-gradient-start: #EBF4FF;
    --g11-gradient-end: #E6FFFA;

    /* Accent Colors */
    --g11-coral: #F68787;
    /* Soft coral */
    --g11-mint: #48BB78;
    /* Vibrant mint */
    --g11-lavender: #9F7AEA;
    /* Pale lavender */
    --g11-gold: #ECC94B;
    /* Morning gold */

    /* Theme Variables */
    --g11-shadow: rgba(76, 81, 191, 0.2);
    --g11-radius: 8px;
    --g11-transition: 0.25s ease;
    --g11-hover: #EBF4FF;
    --g11-current-day: #E6FFFA;
}

/* ==================== ANIMATIONS ==================== */
@keyframes g11-pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.03);
    }
}

@keyframes g11-drift {
    0% {
        background-position: 0 0;
    }

    100% {
        background-position: 50px 50px;
    }
}

@keyframes g11-glow {

    0%,
    100% {
        opacity: 0.8;
    }

    50% {
        opacity: 1;
    }
}

/* ==================== BASE STYLES ==================== */
.group-11 {
    font-family: 'Open Sans', sans-serif;
    color: var(--g11-text);
    line-height: 1.6;
    background: var(--g11-bg);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    background-image:
        radial-gradient(circle at 20% 30%,
            rgba(76, 81, 191, 0.05) 0%,
            transparent 20%),
        radial-gradient(circle at 80% 70%,
            rgba(56, 178, 172, 0.05) 0%,
            transparent 20%);
    background-size: 50px 50px;
    animation: g11-drift 60s linear infinite;
}

.group-11::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(135deg,
            rgba(246, 135, 135, 0.05) 0%,
            transparent 100%);
    pointer-events: none;
    z-index: 0;
}

/* Modern pattern */
.group-11::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100" opacity="0.03"><rect x="10" y="10" width="10" height="10" fill="%234C51BF"/><rect x="30" y="30" width="10" height="10" fill="%234C51BF"/><rect x="50" y="50" width="10" height="10" fill="%234C51BF"/><rect x="70" y="70" width="10" height="10" fill="%234C51BF"/><rect x="90" y="90" width="10" height="10" fill="%234C51BF"/></svg>');
    pointer-events: none;
    z-index: 0;
}

.group-11 .container {
    background-color: rgba(248, 250, 252, 0.97);
    padding: 2rem;
    border: 1px solid var(--g11-primary);
    box-shadow: 0 0 30px var(--g11-shadow);
    position: relative;
    overflow: hidden;
    max-width: 1600px;
    margin: 0 auto;
    border-radius: var(--g11-radius);
    z-index: 1;
}

.group-11 .container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg,
            transparent,
            var(--g11-primary),
            var(--g11-secondary),
            transparent);
    animation: g11-glow 3s infinite;
}

/* ==================== HEADER & TITLE ==================== */
.group-11 #calendar-title {
    font-family: 'Roboto', serif;
    color: var(--g11-primary);
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    position: relative;
    animation: g11-pulse 3s infinite;
}

.group-11 #calendar-title::before,
.group-11 #calendar-title::after {
    content: "•";
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--g11-secondary);
    font-size: 1.5rem;
}

.group-11 #calendar-title::before {
    left: 1rem;
    animation: g11-pulse 2.5s infinite 0.5s;
}

.group-11 #calendar-title::after {
    right: 1rem;
    animation: g11-pulse 2.5s infinite;
}

/* ==================== DATE & WEATHER DISPLAY ==================== */
.group-11 #date-weather-container {
    text-align: center;
    margin: 2rem 0;
    padding: 1rem;
    background-color: rgba(76, 81, 191, 0.1);
    border: 1px solid var(--g11-primary);
    border-radius: var(--g11-radius);
    position: relative;
}

.group-11 #date-weather-container::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
            transparent,
            var(--g11-primary),
            transparent);
}

.group-11 #current-date {
    font-family: 'Roboto', serif;
    color: var(--g11-primary);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
}

.group-11 #today-weather {
    font-family: 'Open Sans', sans-serif;
    color: var(--g11-secondary);
    font-size: 1.2rem;
    letter-spacing: 0.05em;
    font-weight: 600;
}

/* ==================== ANALOG CLOCK ==================== */
.group-11 #analog-watch {
    display: flex;
    justify-content: center;
    margin: 2rem 0;
}

.group-11 .clock-face {
    width: 180px;
    height: 180px;
    border: 1px solid var(--g11-primary);
    border-radius: 50%;
    position: relative;
    background-color: var(--g11-bg);
    box-shadow:
        0 0 15px var(--g11-shadow),
        inset 0 0 10px rgba(76, 81, 191, 0.1);
    background-image:
        radial-gradient(circle at center,
            transparent 65%,
            rgba(56, 178, 172, 0.1) 100%);
}

/* Modern numerals for clock */
.group-11 .clock-face::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" opacity="0.15"><text x="50" y="18" text-anchor="middle" font-family="Roboto" font-size="12" fill="%234C51BF">12</text><text x="82" y="55" text-anchor="middle" font-family="Roboto" font-size="12" fill="%234C51BF">3</text><text x="50" y="92" text-anchor="middle" font-family="Roboto" font-size="12" fill="%234C51BF">6</text><text x="18" y="55" text-anchor="middle" font-family="Roboto" font-size="12" fill="%234C51BF">9</text></svg>');
}

.group-11 .hand {
    position: absolute;
    top: 50%;
    transform-origin: 100%;
    transform: rotate(90deg);
    transition: all 0.05s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

.group-11 .hour-hand {
    width: 40%;
    left: 10%;
    height: 4px;
    background: var(--g11-primary);
    margin-top: -2px;
}

.group-11 .minute-hand {
    width: 48%;
    left: 2%;
    height: 2px;
    background: var(--g11-secondary);
    margin-top: -1px;
}

.group-11 .second-hand {
    width: 48%;
    left: 2%;
    height: 1px;
    background: var(--g11-gold);
    margin-top: -0.5px;
}

/* Clock center */
.group-11 .clock-face::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background-color: var(--g11-lavender);
    border-radius: 50%;
    border: 1px solid var(--g11-primary);
}

/* ==================== CALENDAR TABLE - OPTIMIZED HEADERS ==================== */
.group-11 table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem auto;
    background-color: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--g11-primary);
    border-radius: var(--g11-radius);
    table-layout: fixed;
}

/* Weekday headers - responsive solution */
.group-11 th {
    background-color: rgba(76, 81, 191, 0.1);
    color: var(--g11-primary) !important;
    font-family: 'Open Sans', sans-serif;
    font-weight: 600;
    padding: 0.8rem 0.3rem;
    border: 1px solid var(--g11-primary);
    position: relative;
    font-size: 0.8rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Full names for desktop */
.group-11 th .full-day {
    display: inline;
}

/* Short names for mobile */
.group-11 th .short-day {
    display: none;
}

.group-11 td {
    background-color: rgba(248, 250, 252, 0.95);
    color: var(--g11-text);
    padding: 0.8rem 0.3rem;
    border: 1px solid rgba(76, 81, 191, 0.1);
    height: 90px;
    vertical-align: top;
    transition: all var(--g11-transition);
    position: relative;
    font-size: 0.85rem;
}

.group-11 td:hover {
    background-color: var(--g11-hover);
    box-shadow: inset 0 0 15px var(--g11-shadow);
}

.group-11 .date-number {
    display: block;
    font-weight: 600;
    margin-bottom: 3px;
    color: var(--g11-text);
}

.group-11 td.current-day {
    background-color: var(--g11-current-day);
    border: 2px solid var(--g11-secondary);
    color: var(--g11-primary) !important;
    font-weight: 600;
    animation: g11-glow 3s infinite;
}

.group-11 td.current-day .date-number {
    color: var(--g11-primary) !important;
    font-weight: 700;
}

.group-11 td.current-day::before {
    content: "•";
    position: absolute;
    top: 3px;
    left: 3px;
    color: var(--g11-secondary);
    z-index: 1;
    opacity: 0.8;
    font-size: 0.9rem;
}

/* ==================== EVENT MARKERS ==================== */
.group-11 .event-marker {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--g11-primary);
    margin: 0 1px;
    box-shadow: 0 0 5px var(--g11-shadow);
    transition: all var(--g11-transition);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.group-11 .event-marker:hover {
    transform: scale(1.8);
    background-color: var(--g11-secondary);
    box-shadow: 0 0 15px var(--g11-shadow);
}

/* Special event types */
.group-11 .event-marker.holiday {
    background-color: var(--g11-coral);
}

.group-11 .event-marker.historic {
    background-color: var(--g11-mint);
}

.group-11 .event-marker.patriotic {
    background-color: var(--g11-lavender);
}

/* ==================== MODAL STYLES ==================== */
.group-11 .modal-content {
    position: relative;
    background-color: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--g11-primary);
    padding: 25px;
    color: var(--g11-text);
    box-shadow: 0 0 30px var(--g11-shadow);
    border-radius: var(--g11-radius);
    animation: g11-glow 0.5s ease;
}

.group-11 .modal-content::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg,
            var(--g11-primary),
            var(--g11-secondary),
            var(--g11-coral));
}

.group-11 .modal-content h2 {
    color: var(--g11-primary);
    font-family: 'Roboto', serif;
    font-size: 1.8em;
    margin-bottom: 15px;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.group-11 .modal-content p {
    margin-bottom: 15px;
    font-size: 1.05em;
}

.group-11 .modal-content .event-time {
    display: block;
    font-weight: 600;
    color: var(--g11-secondary);
    margin-bottom: 10px;
    font-size: 1.1em;
}

.group-11 .modal-content .event-description {
    background-color: rgba(76, 81, 191, 0.1);
    padding: 15px;
    border-left: 3px solid var(--g11-primary);
    margin: 15px 0;
    border-radius: 0 var(--g11-radius) var(--g11-radius) 0;
}

.group-11 .modal-content button {
    background-color: var(--g11-primary);
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 0.9em;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--g11-transition);
    border-radius: var(--g11-radius);
    font-family: 'Open Sans', sans-serif;
}

.group-11 .modal-content button:hover {
    background-color: var(--g11-secondary);
    box-shadow: 0 4px 6px -1px var(--g11-shadow);
}

.group-11 .modal .close-button {
    position: absolute;
    top: 12px;
    right: 12px;
    background-color: transparent;
    color: var(--g11-primary);
    border: 1px solid var(--g11-primary);
    width: 28px;
    height: 28px;
    cursor: pointer;
    transition: all var(--g11-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.group-11 .modal .close-button:hover {
    background-color: var(--g11-primary);
    color: white;
}

/* ==================== BUTTONS & CONTROLS ==================== */
.group-11 .button,
.group-11 .transparent-button {
    border: 1px solid var(--g11-primary);
    color: var(--g11-primary);
    background-color: transparent;
    padding: 0.7rem 1.4rem;
    font-family: 'Roboto', serif;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--g11-transition);
    position: relative;
    overflow: hidden;
    margin: 0.5rem;
    border-radius: var(--g11-radius);
    letter-spacing: 0.05em;
}

.group-11 .button::before,
.group-11 .transparent-button::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(76, 81, 191, 0.1), transparent);
    transition: 0.5s;
}

.group-11 .button:hover,
.group-11 .transparent-button:hover {
    background-color: var(--g11-primary);
    color: white;
    box-shadow: 0 4px 6px -1px var(--g11-shadow);
}

.group-11 .button:hover::before,
.group-11 .transparent-button:hover::before {
    left: 100%;
}

.group-11 .controls {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin: 1.5rem 0;
}

/* ==================== THEME SWITCHER ==================== */
.group-11 #theme-switcher-container {
    position: relative;
    margin: 0 1rem;
    min-width: 200px;
    z-index: 1000;
}

.group-11 #theme-switcher {
    background-color: var(--g11-bg);
    color: var(--g11-primary) !important;
    border: 1px solid var(--g11-primary);
    padding: 0.7rem 2.2rem 0.7rem 0.9rem;
    font-family: 'Open Sans', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    width: 100%;
    border-radius: var(--g11-radius);
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%234C51BF'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.6rem center;
    background-size: 0.9rem;
    cursor: pointer;
    transition: all var(--g11-transition);
    box-shadow: 0 1px 3px 0 var(--g11-shadow);
}

.group-11 #theme-switcher option {
    background-color: var(--g11-bg) !important;
    color: var(--g11-primary) !important;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 10px 12px !important;
}

.group-11 #theme-switcher option:hover {
    background-color: var(--g11-primary) !important;
    color: white !important;
}

.group-11 #theme-switcher:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(76, 81, 191, 0.3);
}

/* ==================== BACK TO TOP BUTTON ==================== */
.group-11 #backToTopBtn {
    position: fixed;
    right: 25px;
    bottom: 25px;
    z-index: 9999;
    border: 1px solid var(--g11-primary);
    padding: 0.9rem 1.6rem;
    font-size: 0.9rem;
    font-family: 'Roboto', serif;
    font-weight: 700;
    color: var(--g11-primary);
    background-color: var(--g11-bg);
    cursor: pointer;
    transition: all var(--g11-transition);
    opacity: 0.9;
    display: none;
    border-radius: var(--g11-radius);
    box-shadow: 0 4px 6px -1px var(--g11-shadow);
}

.group-11 #backToTopBtn:hover {
    background-color: var(--g11-primary);
    color: white;
    opacity: 1;
}

/* ==================== FOOTER ==================== */
.group-11 footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.2rem;
    border-top: 1px solid var(--g11-primary);
    color: var(--g11-text);
    font-size: 0.8rem;
}

.group-11 footer::before {
    content: "• ";
    color: var(--g11-primary);
}

/* ==================== MEDIA QUERIES ==================== */
@media (max-width: 992px) {
    .group-11 .container {
        padding: 1.2rem;
    }

    .group-11 #calendar-title {
        font-size: 2rem;
    }

    .group-11 #current-date {
        font-size: 1.5rem;
    }

    .group-11 #today-weather {
        font-size: 1.1rem;
    }

    .group-11 th {
        font-size: 0.75rem;
        padding: 0.7rem 0.2rem;
    }
}

@media (max-width: 768px) {
    .group-11 .container {
        padding: 1rem;
    }

    .group-11 #calendar-title {
        font-size: 1.7rem;
    }

    .group-11 .clock-face {
        width: 140px;
        height: 140px;
    }

    /* Switch to short day names */
    .group-11 th .full-day {
        display: none;
    }

    .group-11 th .short-day {
        display: inline;
    }

    .group-11 th {
        font-size: 0.7rem;
        padding: 0.6rem 0.15rem;
    }

    .group-11 td {
        padding: 0.6rem 0.15rem;
        height: 70px;
        font-size: 0.8rem;
    }

    .group-11 #backToTopBtn {
        right: 15px;
        bottom: 15px;
        padding: 0.7rem 1.3rem;
        font-size: 0.8rem;
    }

    .group-11 #theme-switcher {
        padding: 0.6rem 1.8rem 0.6rem 0.7rem;
        font-size: 0.8rem;
        min-width: 170px;
    }

    .group-11 .modal-content {
        padding: 15px;
    }

    .group-11 .modal-content h2 {
        font-size: 1.5em;
    }
}

@media (max-width: 576px) {
    .group-11 .container {
        padding: 0.8rem;
    }

    .group-11 #calendar-title {
        font-size: 1.4rem;
    }

    .group-11 #current-date {
        font-size: 1.1rem;
    }

    .group-11 #today-weather {
        font-size: 0.9rem;
    }

    .group-11 .clock-face {
        width: 110px;
        height: 110px;
    }

    .group-11 th {
        font-size: 0.65rem;
        padding: 0.5rem 0.1rem;
    }

    .group-11 td {
        padding: 0.4rem 0.1rem;
        height: 60px;
        font-size: 0.75rem;
    }

    .group-11 td.current-day::before {
        font-size: 0.7rem;
    }

    .group-11 #theme-switcher {
        min-width: 150px;
        font-size: 0.75rem;
    }
}

@media (max-width: 400px) {
    .group-11 th {
        font-size: 0.6rem;
        padding: 0.4rem 0.1rem;
    }

    .group-11 td {
        height: 50px;
        font-size: 0.7rem;
    }

    .group-11 #theme-switcher {
        min-width: 130px;
        font-size: 0.7rem;
    }

    .group-11 #calendar-title {
        font-size: 1.2rem;
    }
}