/* ================= GLOBAL ================= */

:root {
    --brown-dark: #4e3425;
    --brown-main: #6e4f3a;
    --brown-soft: #8b6f58;
    --cream-light: #f6efe8;
}

body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* ================= SPLASH SCREEN ================= */

.splash {
    position: fixed;
    width: 100%;
    height: 100vh;
    background: url("splashscreen.jpg") no-repeat center center;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 999;
    transition: opacity 1s ease, visibility 1s ease;
}

.splash.fade-out {
    opacity: 0;
    visibility: hidden;
}

.splash-content {
    text-align: center;
    padding: 50px 70px;
    border-radius: 22px;
    background: rgba(60, 40, 30, 0.65);
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.35);
    animation: fadeIn 1.2s ease forwards;
}

.app-title {
    font-size: 38px;
    color: #fff;
    letter-spacing: 2px;
    margin-bottom: 25px;
}

/* Loader */
.loader {
    width: 45px;
    height: 45px;
    border: 4px solid rgba(255,255,255,0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    margin: auto;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ================= MAIN PAGE ================= */

.overlay {
    min-height: 100vh;
    background: url("background.jpeg") no-repeat center center fixed;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 80px;
    opacity: 0;
    transition: opacity 1.2s ease;
}

.overlay.show-main {
    opacity: 1;
}

/* Main Card */

.container {
    width: 620px;
    padding: 32px;
    border-radius: 24px;
    background: rgba(255, 248, 240, 0.55);
    backdrop-filter: blur(8px);
    box-shadow: 0 20px 50px rgba(78, 52, 37, 0.25);
    border: 1px solid rgba(120, 85, 65, 0.4);
}

/* Title */

h2 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--brown-dark);
    font-weight: 600;
}

/* Sections */

.section {
    margin-bottom: 22px;
}

.section label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--brown-main);
}

/* Inputs */

input, select {
    width: 100%;
    padding: 9px;
    border-radius: 12px;
    border: 1px solid #c8b6a6;
    background: rgba(255,255,255,0.95);
    font-size: 14px;
    color: var(--brown-dark);
    transition: 0.3s ease;
}

input:focus, select:focus {
    border-color: var(--brown-main);
    box-shadow: 0 0 6px rgba(110,79,58,0.3);
    outline: none;
}

/* Subject row */

.subject-row {
    display: flex;
    gap: 10px;
}

.subject-row input { flex: 2; }
.subject-row select { flex: 1; }

.subject-row button {
    flex: 1;
    background: var(--brown-soft);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: 0.3s ease;
}

.subject-row button:hover {
    background: var(--brown-main);
}

/* Two column layout */

.two-column {
    display: flex;
    gap: 28px;
    margin-top: 10px;
}

.two-column div {
    flex: 1;
}

/* Main button */

.main-btn {
    padding: 11px 26px;
    background: var(--brown-main);
    color: white;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    transition: 0.3s ease;
}

.main-btn:hover {
    background: var(--brown-dark);
}

/* Subject tags */

#subjectTags {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 6px 12px;
    background: rgba(110, 79, 58, 0.15);
    border-radius: 20px;
    font-size: 13px;
    color: var(--brown-dark);
    border: 1px solid rgba(110, 79, 58, 0.3);
}

/* ================= AI RESPONSE CARD ================= */

.agent-box {
    margin-top: 30px;
    padding: 22px;
    border-radius: 18px;
    background: rgba(110, 79, 58, 0.08);
    border-left: 6px solid var(--brown-main);
    box-shadow: 0 12px 30px rgba(78, 52, 37, 0.15);
    color: var(--brown-dark);
    line-height: 1.6;
}

/* ================= SCHEDULE GRID ================= */

.schedule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 18px;
    margin-top: 25px;
}

.day-column {
    background: rgba(139, 111, 88, 0.15);
    border-radius: 16px;
    padding: 15px;
    box-shadow: 0 10px 25px rgba(78, 52, 37, 0.15);
    transition: 0.3s ease;
}

.day-column:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(78, 52, 37, 0.25);
}

.column-header {
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--brown-main);
    border-bottom: 1px solid rgba(110, 79, 58, 0.3);
    padding-bottom: 6px;
}

.task-box {
    background: rgba(110, 79, 58, 0.2);
    padding: 8px 10px;
    border-radius: 10px;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--brown-dark);
    box-shadow: 0 6px 15px rgba(78, 52, 37, 0.12);
}