/* =============================================
   Stairio Design System — Shared Components
   Reusable UI elements across all pages
   ============================================= */

/* ===== Buttons ===== */
.btn-primary {
    background: linear-gradient(135deg, var(--brand), var(--brand-dark));
    color: #fff;
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-brand);
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(139, 92, 246, 0.5);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    padding: 16px 32px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    cursor: pointer;
    display: inline-block;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

/* ===== Section Eyebrow ===== */
.section-eyebrow {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: rgba(180, 160, 255, 0.9);
    margin-bottom: 22px;
}

/* ===== Section Header ===== */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header .section-eyebrow {
    margin-bottom: 18px;
}

.section-header h2 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 600;
    color: #ffffff;
    letter-spacing: -0.5px;
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.5);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ===== Badge ===== */
.badge {
    background: rgba(139, 92, 246, 0.15);
    color: var(--brand-light);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid rgba(139, 92, 246, 0.2);
    display: inline-block;
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--surface-2);
    border-radius: 20px;
    padding: 0;
    max-width: 540px;
    width: 90%;
    max-height: 85vh;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
    border: 1px solid var(--line-solid);
    transform: scale(0.95) translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--surface-3);
    border: 2px solid var(--line-solid);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--brand);
    transition: all 0.3s;
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.modal-close:hover {
    background: var(--brand);
    border-color: var(--brand);
    color: white;
    transform: rotate(90deg) scale(1.1);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.3);
}

.modal-header {
    padding: 28px 28px 20px;
    border-bottom: 1px solid rgba(139, 92, 246, 0.12);
    background: linear-gradient(180deg, rgba(139, 92, 246, 0.04) 0%, transparent 100%);
}

.modal-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    margin: 0;
    letter-spacing: -0.5px;
}

.modal-body {
    padding: 24px 28px 28px;
    overflow-y: auto;
    max-height: calc(85vh - 120px);
}

/* ===== Card Base ===== */
.card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: rgba(139, 92, 246, 0.2);
    background: rgba(255, 255, 255, 0.05);
}

/* ===== Form Inputs ===== */
.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--line-solid);
    border-radius: 10px;
    font-size: 14px;
    transition: all 0.3s;
    background: var(--surface-3);
    color: var(--text);
}

.form-input:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

/* ===== Mobile Modal ===== */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .modal-header {
        padding: 20px;
    }

    .modal-title {
        font-size: 18px;
    }

    .modal-body {
        padding: 20px;
    }

    .modal-close {
        top: 16px;
        right: 16px;
        width: 32px;
        height: 32px;
    }
}