/* Explain: Styles for premium UI components, including buttons, cards, and inputs. */
.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    padding: 0.625rem 1.5rem;
    font-weight: 700;
    letter-spacing: 0.025em;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: #ffffff;
    box-shadow: 0 4px 12px -2px rgba(14, 165, 233, 0.25);
    border: 1px solid rgba(14, 165, 233, 0.4);
    cursor: pointer;
    text-align: center;
}
.btn-premium:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--accent-hover) 0%, #0369a1 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px -3px rgba(14, 165, 233, 0.35);
}
.btn-premium:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-accent {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    padding: 0.625rem 1.5rem;
    font-weight: 700;
    letter-spacing: 0.025em;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: #ffffff;
    box-shadow: 0 4px 12px -2px rgba(14, 165, 233, 0.25);
    border: 1px solid rgba(14, 165, 233, 0.4);
    cursor: pointer;
    text-align: center;
}
.btn-accent:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--accent-hover) 0%, #0369a1 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px -3px rgba(14, 165, 233, 0.35);
}
.btn-accent:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-outline-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    padding: 0.625rem 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    transition: all 0.3s ease;
    background-color: var(--surface-color);
    cursor: pointer;
    text-align: center;
}
.btn-outline-premium:hover {
    background-color: var(--surface-elevated);
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

.card-premium {
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    background: var(--surface-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 10;
    box-shadow: var(--shadow-soft);
}
.card-premium:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

html[data-theme="light"] .card-premium {
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 250, 252, 0.96)),
        radial-gradient(circle at 15% 0%, rgba(0, 120, 255, 0.06), transparent 30%),
        radial-gradient(circle at 90% 15%, rgba(178, 30, 39, 0.04), transparent 26%);
}

.input-premium {
    width: 100%;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    padding: 0.875rem 1.25rem;
    color: var(--text-color);
    transition: all 0.3s ease;
    outline: none;
    background: var(--surface-elevated);
    font-family: inherit;
    font-size: 0.875rem;
}
.input-premium::placeholder {
    color: var(--text-muted);
    opacity: 0.72;
}
.input-premium:hover {
    background: var(--surface-elevated);
    border-color: var(--border-strong);
}
.input-premium:focus {
    background: var(--surface-elevated);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.16);
}

html[data-theme="light"] .input-premium {
    background: #ffffff;
    box-shadow: inset 0 1px 0 rgba(15, 23, 42, 0.03);
}
html[data-theme="light"] .input-premium:focus {
    box-shadow: 0 0 0 4px rgba(2, 119, 189, 0.12);
}

.glass-panel {
    border-radius: 1.5rem;
    border: 1px solid var(--border-color);
    padding: 2rem;
    box-shadow: var(--shadow-panel);
    position: relative;
    overflow: hidden;
    z-index: 10;
    background: var(--surface-elevated);
}
@media (min-width: 768px) {
    .glass-panel {
        padding: 2.5rem;
    }
}

.floating-whatsapp {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 50;
    display: flex;
    height: 3.5rem;
    width: 3.5rem;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    background: var(--whatsapp-surface);
    border: 1px solid rgba(37, 211, 102, 0.3);
    color: #ffffff;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px -2px rgba(37, 211, 102, 0.1);
}
.floating-whatsapp:hover {
    transform: translateY(-4px);
    background: rgba(37, 211, 102, 0.25);
    border-color: rgba(37, 211, 102, 0.6);
    box-shadow: 0 8px 20px -3px rgba(37, 211, 102, 0.2);
}

.option-premium {
    width: 100%;
    text-align: left;
    padding: 1.25rem 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--surface-elevated);
    color: var(--text-color);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
    cursor: pointer;
}
.option-premium:hover {
    border-color: var(--border-strong);
    background: var(--surface-color);
}
.option-premium.active {
    border-color: var(--accent-color);
    background: rgba(14, 165, 233, 0.1);
    box-shadow: 0 0 0 1px var(--accent-color);
}

.radio-premium {
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--surface-elevated);
    transition: all 0.3s ease;
}
.radio-premium:hover {
    border-color: var(--border-strong);
    background: var(--surface-color);
}
.radio-premium.active {
    border-color: var(--accent-color);
    background: rgba(14, 165, 233, 0.1);
    box-shadow: 0 0 0 1px var(--accent-color);
}

.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    padding: 0.625rem 1.5rem;
    font-weight: 600;
    color: #fff;
    background: var(--whatsapp-surface);
    border: 1px solid rgba(37, 211, 102, 0.3);
    box-shadow: 0 4px 12px -2px rgba(37, 211, 102, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
}
.btn-whatsapp:hover {
    background: rgba(37, 211, 102, 0.25);
    border-color: rgba(37, 211, 102, 0.6);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px -3px rgba(37, 211, 102, 0.15);
}

.btn-ai {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    padding: 0.625rem 1.5rem;
    font-weight: 600;
    color: #fff;
    background: var(--surface-color);
    border: 1px solid transparent;
    background-image: linear-gradient(var(--surface-color), var(--surface-color)), linear-gradient(90deg, var(--grit-blue), var(--accent-color), var(--grit-red));
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow: 0 4px 12px -2px rgba(139, 92, 246, 0.15);
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
}
.btn-ai:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px -2px rgba(139, 92, 246, 0.25);
}

html[data-theme="light"] .btn-ai {
    background-image: linear-gradient(var(--surface-elevated), var(--surface-elevated)), linear-gradient(90deg, var(--grit-blue), var(--accent-color), var(--grit-red));
    box-shadow: 0 12px 28px -18px rgba(0, 120, 255, 0.38);
}
html[data-theme="light"] .btn-ai:hover {
    background-image: linear-gradient(90deg, var(--grit-blue), var(--accent-color), var(--grit-red));
}

/* Elegant navigation theme switch */
.theme-toggle {
    position: relative;
    display: inline-flex;
    width: 3.25rem;
    height: 1.8rem;
    align-items: center;
    justify-content: space-between;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
        var(--surface-color);
    color: var(--text-muted);
    padding: 0 0.38rem;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}
.theme-toggle:hover {
    border-color: var(--border-strong);
    color: var(--text-color);
    transform: translateY(-1px);
}
.theme-toggle__icon {
    position: relative;
    z-index: 2;
    font-size: 0.72rem;
    line-height: 1;
}
.theme-toggle__knob {
    position: absolute;
    z-index: 1;
    top: 0.22rem;
    left: 0.22rem;
    width: 1.34rem;
    height: 1.34rem;
    border-radius: 9999px;
    background: linear-gradient(135deg, var(--accent-color), var(--grit-blue));
    box-shadow: 0 3px 10px rgba(2, 132, 199, 0.28);
    transition: transform 0.3s ease, background 0.3s ease;
}
html[data-theme="light"] .theme-toggle__knob {
    transform: translateX(1.45rem);
    background: linear-gradient(135deg, #f59e0b, #f97316);
}
.theme-toggle-hint {
    position: absolute;
    right: 0;
    top: calc(100% + 0.75rem);
    width: 14rem;
    border-radius: 0.9rem;
    border: 1px solid var(--border-color);
    background: var(--dropdown-surface);
    color: var(--text-color);
    padding: 0.75rem 0.9rem;
    font-size: 0.72rem;
    line-height: 1.35;
    box-shadow: var(--shadow-panel);
}
.theme-toggle-hint::before {
    content: '';
    position: absolute;
    top: -0.35rem;
    right: 1rem;
    width: 0.7rem;
    height: 0.7rem;
    transform: rotate(45deg);
    background: var(--dropdown-surface);
    border-left: 1px solid var(--border-color);
    border-top: 1px solid var(--border-color);
}

/* Tame oversized Tailwind paddings on all buttons for a more compact, refined look */
[class*="btn-"].py-3,
[class*="btn-"].py-3\.5,
[class*="btn-"].py-4 {
    padding-top: 0.625rem !important;
    padding-bottom: 0.625rem !important;
}

[class*="btn-"].px-8,
[class*="btn-"].px-10 {
    padding-left: 1.5rem !important;
    padding-right: 1.5rem !important;
}