* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: #f0f2f5;
    min-height: 100vh;
    overflow: hidden;
}

/* ========== Landing Page ========== */
.landing-page {
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 40%, #2563eb 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.landing-page::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 70%);
    top: -100px;
    right: -100px;
    border-radius: 50%;
}

.landing-page::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, transparent 70%);
    bottom: -50px;
    left: -50px;
    border-radius: 50%;
}

.landing-content {
    text-align: center;
    color: white;
    z-index: 1;
}

.landing-logo {
    width: 120px;
    height: 120px;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 52px;
    margin: 0 auto 32px;
    color: #60a5fa;
}

.landing-content h1 {
    font-size: 42px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 10px;
}

.landing-content > p {
    font-size: 20px;
    opacity: 0.7;
    font-weight: 300;
}

.landing-hint {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 48px;
    font-size: 16px;
    opacity: 0.5;
    animation: hintPulse 2s ease-in-out infinite;
}

@keyframes hintPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.7; }
}

/* ========== Chat Bubble ========== */
.chat-bubble {
    position: fixed;
    bottom: 40px;
    right: 40px;
    z-index: 1000;
    cursor: pointer;
}

.bubble-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: white;
    box-shadow: 0 8px 32px rgba(37, 99, 235, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 2;
}

.bubble-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 40px rgba(37, 99, 235, 0.5);
}

.bubble-pulse {
    position: absolute;
    top: 0;
    left: 0;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.3);
    animation: pulse 2s ease-out infinite;
    z-index: 1;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.6; }
    100% { transform: scale(1.8); opacity: 0; }
}

.bubble-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 26px;
    height: 26px;
    background: #ef4444;
    color: white;
    border-radius: 50%;
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
    border: 3px solid white;
    animation: badgePop 0.3s ease;
}

.bubble-badge.hidden {
    display: none;
}

@keyframes badgePop {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.chat-bubble.open .bubble-icon {
    transform: rotate(0deg);
}

.chat-bubble.open .bubble-pulse {
    display: none;
}

/* ========== Chat Widget — CENTERED & LARGE ========== */
.chat-widget {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 90vw;
    max-width: 900px;
    height: 90dvh;
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 32px 100px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    z-index: 999;
    overflow: hidden;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.chat-widget.open {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
    pointer-events: all;
}

/* ========== Widget Header ========== */
.widget-header {
    background: linear-gradient(135deg, #1e3a5f, #2563eb);
    padding: 22px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 10;
}

.widget-header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.widget-avatar {
    width: 54px;
    height: 54px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    position: relative;
}

.online-dot {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 16px;
    height: 16px;
    background: #22c55e;
    border-radius: 50%;
    border: 3px solid #1e3a5f;
}

.widget-header-info h2 {
    color: white;
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.2px;
}

.widget-header-info p {
    color: rgba(255,255,255,0.7);
    font-size: 16px;
    margin-top: 3px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    display: inline-block;
}

.header-btn {
    background: rgba(255,255,255,0.1);
    border: none;
    color: white;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 18px;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-btn:hover {
    background: rgba(255,255,255,0.2);
}

/* ========== Messages ========== */
.widget-messages {
    flex: 1;
    overflow-y: auto;
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    background: #f8fafc;
    scroll-behavior: smooth;
}

.message {
    max-width: 80%;
    padding: 18px 24px;
    font-size: 20px;
    line-height: 1.7;
    animation: msgIn 0.3s ease;
}

@keyframes msgIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.bot-message {
    background: white;
    color: #1e293b;
    align-self: flex-start;
    border-radius: 6px 20px 20px 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.user-message {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    align-self: flex-end;
    border-radius: 20px 6px 20px 20px;
}

/* ========== Service Buttons ========== */
.service-buttons-wrapper {
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-btn {
    width: 100%;
    padding: 16px 18px;
    font-family: inherit;
    border: 2px solid #e2e8f0;
    border-radius: 14px;
    background: white;
    color: #1e293b;
    cursor: pointer;
    transition: all 0.2s;
    outline: none;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.service-btn:hover {
    border-color: #2563eb;
    background: #eff6ff;
}

.service-btn.selected {
    border-color: #2563eb;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
}

.service-btn.selected .service-btn-desc {
    color: rgba(255, 255, 255, 0.8);
}

.service-btn:disabled {
    cursor: default;
}

.service-btn:disabled:not(.selected) {
    opacity: 0.5;
}

.service-btn-name {
    font-size: 18px;
    font-weight: 600;
}

.service-btn-desc {
    font-size: 14px;
    color: #64748b;
}

/* ========== Booking Button ========== */
.booking-trigger-btn {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    border: none;
    padding: 16px 28px;
    border-radius: 14px;
    cursor: pointer;
    font-size: 18px;
    font-weight: 600;
    font-family: inherit;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.booking-trigger-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

.booking-trigger-btn:disabled {
    transform: none;
    box-shadow: none;
    cursor: default;
}

/* ========== Input Area ========== */
.widget-input {
    padding: 20px 28px;
    background: white;
    border-top: 1px solid #e2e8f0;
    flex-shrink: 0;
}

.input-wrapper {
    display: flex;
    gap: 12px;
    align-items: center;
    background: #f1f5f9;
    border-radius: 18px;
    padding: 6px 6px 6px 20px;
    border: 2px solid transparent;
    transition: border-color 0.2s;
}

.input-wrapper:focus-within {
    border-color: #2563eb;
    background: white;
}

.input-wrapper input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 20px;
    font-family: inherit;
    outline: none;
    color: #1e293b;
    padding: 12px 0;
}

.input-wrapper input::placeholder {
    color: #94a3b8;
}

.input-wrapper button {
    width: 52px;
    height: 52px;
    border: none;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    border-radius: 14px;
    cursor: pointer;
    font-size: 20px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.input-wrapper button:hover {
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.input-footer {
    text-align: center;
    margin-top: 10px;
    font-size: 13px;
    color: #94a3b8;
}

/* ========== Typing Indicator ========== */
.typing-indicator {
    display: flex;
    gap: 6px;
    padding: 18px 24px;
    align-self: flex-start;
    background: white;
    border-radius: 6px 20px 20px 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.typing-indicator span {
    width: 10px;
    height: 10px;
    background: #94a3b8;
    border-radius: 50%;
    animation: bounce 1.4s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-10px); }
}

/* ========== Calendar Modal — LARGE ========== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    justify-content: center;
    align-items: center;
    z-index: 1100;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: white;
    border-radius: 24px;
    width: 100%;
    max-width: 620px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 32px 100px rgba(0, 0, 0, 0.25);
    animation: modalIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    padding: 24px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #e2e8f0;
}

.modal-header h2 {
    font-size: 22px;
    color: #1e293b;
    font-weight: 600;
}

.modal-close {
    background: #f1f5f9;
    border: none;
    font-size: 18px;
    color: #64748b;
    cursor: pointer;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.modal-close:hover {
    background: #e2e8f0;
    color: #1e293b;
}

/* ========== Calendar ========== */
.calendar-container {
    padding: 28px 32px;
}

.calendar-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.calendar-nav span {
    font-weight: 600;
    font-size: 22px;
    color: #1e293b;
}

.calendar-nav button {
    background: #f1f5f9;
    border: none;
    border-radius: 12px;
    width: 44px;
    height: 44px;
    cursor: pointer;
    color: #64748b;
    font-size: 16px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calendar-nav button:hover {
    background: #e2e8f0;
    color: #2563eb;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    margin-bottom: 10px;
}

.calendar-weekdays span {
    font-size: 16px;
    font-weight: 600;
    color: #94a3b8;
    padding: 10px 0;
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    background: none;
    color: #1e293b;
    font-family: inherit;
    font-weight: 500;
}

.calendar-day:hover:not(.disabled):not(.empty) {
    background: #eff6ff;
    color: #2563eb;
}

.calendar-day.today {
    border: 2px solid #2563eb;
    font-weight: 700;
}

.calendar-day.selected {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    font-weight: 700;
}

.calendar-day.disabled {
    color: #cbd5e1;
    cursor: not-allowed;
}

.calendar-day.empty {
    cursor: default;
}

/* ========== Time Slots ========== */
.time-slots-container {
    padding: 0 32px 28px;
}

.time-slots-container h3 {
    font-size: 18px;
    color: #1e293b;
    margin-bottom: 14px;
    font-weight: 600;
}

.time-slots {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.time-slot {
    padding: 14px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    font-size: 18px;
    font-weight: 500;
    font-family: inherit;
    transition: all 0.2s;
    background: white;
    color: #1e293b;
}

.time-slot:hover {
    border-color: #2563eb;
    background: #eff6ff;
}

.time-slot.selected {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    border-color: #2563eb;
}

/* ========== Confirmation ========== */
.confirmation-card {
    background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
    border: 2px solid #86efac;
    border-radius: 16px;
    padding: 20px;
    margin-top: 10px;
}

.confirmation-card h3 {
    color: #16a34a;
    font-size: 18px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.confirmation-card p {
    font-size: 16px;
    color: #334155;
    margin: 6px 0;
    line-height: 1.6;
}

/* ========== Scrollbar ========== */
.widget-messages::-webkit-scrollbar {
    width: 6px;
}

.widget-messages::-webkit-scrollbar-track {
    background: transparent;
}

.widget-messages::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px;
}

.widget-messages::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .chat-bubble {
        bottom: 24px;
        right: 24px;
    }

    .chat-widget {
        top: 0;
        left: 0;
        bottom: 0;
        right: 0;
        width: 100dvw;
        height: 100dvh;
        max-width: none;
        border-radius: 0;
        transform: translate(0, 0) scale(1);
        opacity: 0;
        pointer-events: none;
    }

    .chat-widget.open {
        transform: translate(0, 0) scale(1);
        opacity: 1;
        pointer-events: all;
    }

    .widget-header {
        padding: 16px 20px;
    }

    .widget-header-left {
        gap: 12px;
    }

    .widget-avatar {
        width: 42px;
        height: 42px;
        font-size: 18px;
    }

    .widget-header-info h2 {
        font-size: 16px;
    }

    .widget-header-info p {
        font-size: 12px;
    }

    .widget-header-actions {
        display: flex;
        gap: 8px;
    }

    .header-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .widget-messages {
        padding: 16px;
        gap: 10px;
    }

    .message {
        font-size: 16px;
        padding: 14px 16px;
    }

    .widget-input {
        padding: 12px 16px;
        padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
        position: sticky;
        bottom: 0;
        background: white;
        z-index: 5;
    }

    .input-wrapper {
        padding: 4px 4px 4px 14px;
    }

    .input-wrapper input {
        font-size: 16px;
        padding: 10px 0;
    }

    .input-wrapper button {
        width: 46px;
        height: 46px;
        font-size: 18px;
    }

    .input-footer {
        display: none;
    }

    .landing-content h1 {
        font-size: 28px;
    }

    .landing-logo {
        width: 80px;
        height: 80px;
        font-size: 38px;
    }

    .time-slots {
        grid-template-columns: repeat(3, 1fr);
    }

    .modal {
        max-width: 100%;
        max-height: 85vh;
        border-radius: 16px;
        margin: auto 10px;
    }

    .calendar-container {
        padding: 16px;
    }

    .calendar-nav span {
        font-size: 18px;
    }

    .calendar-day {
        font-size: 15px;
    }

    .calendar-weekdays span {
        font-size: 13px;
    }

    .time-slot {
        padding: 12px;
        font-size: 15px;
    }

    .service-btn-name {
        font-size: 16px;
    }

    .service-btn-desc {
        font-size: 13px;
    }

    .service-btn {
        padding: 14px;
    }

    .booking-trigger-btn {
        font-size: 16px;
        padding: 14px 20px;
    }
}